Many scholars readily admit this. See, for example, John N. Oswalt, The Book of Isaiah: Chapters 1–39 (Grand Rapids: Eerdmans, 1986), p. 322; Wildberger, Isaiah 13–27, pp. 63, 65; W.S. Prinsloo, “Isaiah 14:12–15—Humiliation, Hubris, Humiliation,” Zeitschrift für die alttestamentliche Wissenschaft 93 (1981), p. 438 n. 35.